Please try
="Kuwaiti DInar "&TRIM(INDEX({"","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"},INT(MOD(B7/10^11,10))+1)&IF(INT(MOD(B7/10^11,10))," Hundred ","")&INDEX(CHOOSE({2;1;2;2;2;2;2;2;2;2},{"Ten","Eleven","Twelve","Thirteen","Fourteen","Fifteen","Sixteen","Seventeen","Eighteen","Nineteen"},{"";1;"Twenty";"Thirty";"Forty";"Fifty";"Sixty";"Seventy";"Eighty";"Ninety"}&" "&{"","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"}),MOD(B7/10^10,10)+1,MOD(B7/10^9,10)+1)&IF(INT(MOD(B7,10^12)/10^9)," Billion ","")&INDEX({"","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"},INT(MOD(B7/10^8,10))+1)&IF(INT(MOD(B7/10^8,10))," Hundred ","")&INDEX(CHOOSE({2;1;2;2;2;2;2;2;2;2},{"Ten","Eleven","Twelve","Thirteen","Fourteen","Fifteen","Sixteen","Seventeen","Eighteen","Nineteen"},{"";1;"Twenty";"Thirty";"Forty";"Fifty";"Sixty";"Seventy";"Eighty";"Ninety"}&" "&{"","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"}),MOD(B7/10^7,10)+1,MOD(B7/10^6,10)+1)&IF(INT(MOD(B7,10^9)/10^6)," Million ","")
&INDEX({"","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"},INT(MOD(B7/10^5,10))+1)&IF(INT(MOD(B7/10^5,10))," Hundred ","")&INDEX(CHOOSE({2;1;2;2;2;2;2;2;2;2},{"Ten","Eleven","Twelve","Thirteen","Fourteen","Fifteen","Sixteen","Seventeen","Eighteen","Nineteen"},{"";1;"Twenty";"Thirty";"Forty";"Fifty";"Sixty";"Seventy";"Eighty";"Ninety"}&" "&{"","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"}),MOD(B7/10^4,10)+1,MOD(B7/10^3,10)+1)&IF(INT(MOD(B7,10^6)/10^3)," Thousand ","")
&INDEX({"","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"},INT(MOD(B7/10^2,10))+1)&IF(INT(MOD(B7/10^2,10))," Hundred ","")&INDEX(CHOOSE({2;1;2;2;2;2;2;2;2;2},{"Ten","Eleven","Twelve","Thirteen","Fourteen","Fifteen","Sixteen","Seventeen","Eighteen","Nineteen"},{"";1;"Twenty";"Thirty";"Forty";"Fifty";"Sixty";"Seventy";"Eighty";"Ninety"}&" "&{"","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"}),MOD(B7/10^1,10)+1,MOD(B7/10^0,10)+1)&IF(INT(B7),""," Zero")
&IF(MOD(B7,1)," and "&INDEX({"","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"},INT(MOD(INT(B7*10),10))+1)&IF(MOD(INT(B7*10),10)," Hundred ","")&INDEX(CHOOSE({2;1;2;2;2;2;2;2;2;2},{"Ten","Eleven","Twelve","Thirteen","Fourteen","Fifteen","Sixteen","Seventeen","Eighteen","Nineteen"},{"";1;"Twenty";"Thirty";"Forty";"Fifty";"Sixty";"Seventy";"Eighty";"Ninety"}&" "&{"","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"}),MOD(INT(B7*100),10)+1,MOD(B7*1000,10)+1)&IF(MOD(B7,1)," Fills Only"," Zero"),"Only"))