Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ad559c901778c4c404d7f85a6a2db8f51f5a862c2b0e0a64b563e9408aad53a9:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^